This quiz works best with JavaScript enabled. Home > Science > Physics > Physics Basics > Physics – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Physics Quiz 18 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The amount of energy required to raise the temperature 1$^ \circ$C for every kilogram is called .....? A) Thermal Energy. B) Specific Heat. C) Temperature. D) Kinetic Energy. Show Answer Correct Answer: B) Specific Heat. 2. Terminal velocity is: A) The maximum speed an object can go. B) The maximum velocity an object can fall. C) The maximum velocity an object can fall, given its shape. D) 3.0 x 108 m/s. Show Answer Correct Answer: C) The maximum velocity an object can fall, given its shape. 3. A CONVERGENT LENS OF POWER 8D IS COMBINED WITH A DIVERGENT LENS OF POWER-10D . CALCULATE THE FOCAL LENGTH OF THE COMBINATION . A) -0.5. B) -1.5. C) -2. D) 2. Show Answer Correct Answer: A) -0.5. 4. Calculate the amount of heat added to 15 kg gold to change phase from solid to liquid. (The heat of fusion for gold is 64500 J/kg) A) 967, 500 calories. B) 976, 500 Joules. C) 967, 500 Joules. D) 976, 500 calories. Show Answer Correct Answer: C) 967, 500 Joules. 5. A skateboarder with a mass of 75.0 kg at the top of a 4.50 m ramp will have how much kinetic energy at the moment before they reach the bottom of the ramp? (g=9.81m/s2) A) 3.31x103 KJ. B) 3.31 J. C) 3310.875 J. D) 3.31 KJ. Show Answer Correct Answer: D) 3.31 KJ. 6. Physics variable for 56 J A) W. B) KE. C) PE. D) All of the above. Show Answer Correct Answer: D) All of the above. 7. If FM is being transmitted at the frequency of 113.5 Mega Hertz. What is the frequency of the radio waves in Hz? A) 1.14 x 105. B) 1.14 x 106. C) 1.14 x 107. D) 1.14x 108. Show Answer Correct Answer: D) 1.14x 108. 8. What does a change in amplitude in a mechanical wave also change/create? A) Speed. B) Constructive Interference. C) Destructive Interference. D) Frequency. E) None of the above. Show Answer Correct Answer: E) None of the above. 9. The photoelectric effect only occurs if the light shining on the metal is: A) Coherent. B) Above a minimum intensity. C) Above a minimum frequency. D) Above a minimum wavelength. Show Answer Correct Answer: C) Above a minimum frequency. 10. G of water. specific heat of water is 4.18 J/g$^ \circ$C . temperature changes from 25$^ \circ$ C to 20$^ \circ$ C, how much heat energy (Q) moves from the water to the surroundings? A) 418 J. B) 209 J. C) 83 J. D) 4.18 J. Show Answer Correct Answer: A) 418 J. 11. Which one of these is in scientific notation? A) 8.987000. B) 8.98 x 106. C) 80.987 x 10. D) 8.986. Show Answer Correct Answer: B) 8.98 x 106. 12. What is vibration? A) How loud a sound is. B) The back and forth movement of matter. C) How high or low a sound is. D) The loudness or softness of a sound. Show Answer Correct Answer: B) The back and forth movement of matter. 13. The number of times a wave passes a given point in a certain amount of time. A) Wavelength. B) Speed. C) Frequency. D) Hertz. Show Answer Correct Answer: C) Frequency. 14. WHEN A 40V BATTERY IS CONNECTED ACROSS AN UNKNOWN RESISTOR THERE IS A CURRENT OF 100mA IN THE CIRCUIT . FIND THE VALUE OF THE RESISTANCE OF THE RESISTOR: A) 500 ohm. B) 800 ohm. C) 0.8 ohm. D) 400 ohm. Show Answer Correct Answer: D) 400 ohm. 15. A satellite that is a spinning cylinder has initial rotational inertia $ I_0$ and angular velocity $ \omega_0$ . Solar panels unfold from the satellite and are extended outward. The satellite then has rotational inertia $ I_f=aI_0$ and angular velocity $ \omega_f=b\omega_0$, where $ a$ and $ b$ are constants. Which of the following is true about the constants $ a$ and $ b$? A) $ a=1$ and $ b=1$. B) $ a>1$ and $ b<1$. C) $ a>1$ and $ b=1$. D) $ a<1$ and $ b<1$. Show Answer Correct Answer: B) $ a>1$ and $ b<1$. 16. Which of the following quantities is considered a vector? A) Temperature. B) Distance. C) Mass. D) Displacement. Show Answer Correct Answer: D) Displacement. 17. Which energy transformation below matches? A book falling? A) Chemical to sound and heat. B) Kinetic to sound and heat. C) Electrical to sound and heat. D) None of above. Show Answer Correct Answer: B) Kinetic to sound and heat. 18. Which Branch of Physics is most important when studying the results of a car crash? A) Mechanics. B) Waves & Wave mechanics. C) Relativity. D) Electromagnetism. Show Answer Correct Answer: A) Mechanics. 19. What two dimensions, in addition to mass, are commonly used by physicists to derive additional measurements? A) Length and width. B) Area and mass. C) Length and time. D) Velocity and time. Show Answer Correct Answer: C) Length and time. 20. Equation for pressure A) Force x area. B) Area / force. C) Force / area. D) Force-area. Show Answer Correct Answer: C) Force / area. ← PreviousNext →Related QuizzesPhysics QuizzesScience QuizzesPhysics Quiz 1Physics Quiz 2Physics Quiz 3Physics Quiz 4Physics Quiz 5Physics Quiz 6Physics Quiz 7Physics Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books